implement ssr

apps/frontend/src/app.tsx

@@ -0,0 +1,19 @@
+import { Route, Routes } from "react-router-dom";
+
+import Home from "./pages/home";
+import LogIn from "./pages/login";
+import Post from "./pages/post";
+import Editor from "./pages/editor";
+
+/** The route tree, shared by the browser and server entry points. */
+export default function App() {
+  return (
+    <Routes>
+      <Route path="/" element={<Home />} />
+      <Route path="/login" element={<LogIn />} />
+      <Route path="/post/:slug" element={<Post />} />
+      <Route path="/editor" element={<Editor />} />
+      <Route path="/editor/:slug" element={<Editor />} />
+    </Routes>
+  );
+}